B1670 – Mirror Passenger Right/Left Motor Stalled

The ODBII code B1670 indicates that the passenger side mirror motor has stalled, meaning it is unable to move or function properly.

The severity of ODBII code B1670 is moderate.

Common Causes For: B1669 Mirror Passenger Up/Down Motor Stalled

• Faulty mirror motor
• Wiring issues or short circuits
• Poor electrical connections
• Obstructed mirror movement
• Failed switch or control module
• Blown fuse
• Corroded connectors

Common misdiagnosis for B1670 Mirror Passenger Right/Left Motor Stalled

• Faulty window regulator
• Bad power window switch
• Wiring issues or shorts
• Defective door module
• Malfunctioning mirror switch
• Battery or charging system problems
• Incorrectly installed or damaged mirror assembly
• Software or calibration issues in the vehicle’s control module

Common Troubleshooting Steps

When dealing with an OBD-II code B1670, which indicates a problem with the passenger side mirror motor (specifically that it is stalled), there are several common troubleshooting steps you can take to diagnose and potentially resolve the issue. Here’s a step-by-step guide:

• Visual Inspection: **Check the Mirror Assembly: Inspect the passenger side mirror for any physical damage or obstructions that may prevent it from moving.
• **Wiring and Connectors: Look for damaged, frayed, or corroded wires and connectors leading to the mirror motor. Ensure all connections are secure.
• Test the Mirror Motor: **Manual Operation: If possible, manually adjust the mirror to see if it moves freely. If it’s stuck, there may be a mechanical issue.
• **Power Supply Check: Use a multimeter to check if the mirror motor is receiving power when the adjustment switch is activated. If there’s no power, the issue may lie in the wiring or switch.
• Check the Switch: **Functionality Test: Test the mirror adjustment switch for proper operation. You can do this by checking for continuity with a multimeter when the switch is pressed.
• **Replace if Necessary: If the switch is faulty, replacing it may resolve the issue.
• Scan for Additional Codes: **Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Inspect the Control Module: **Body Control Module (BCM): If the mirror motor and switch are functioning correctly, the issue may lie within the BCM. Check for any faults or software issues.
• **Reprogram or Replace: If necessary, reprogram or replace the BCM.
• Clear Codes and Test Drive: **Clear the Code: After performing any repairs, clear the trouble code using an OBD-II scanner.
• **Test Drive: Take the vehicle for a test drive to see if the code reappears. Monitor the operation of the mirror during this time.
• Consult a Professional: If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model.Additional Considerations
• Battery Voltage: Ensure the vehicle’s battery is in good condition, as low voltage can affect electronic components.
• Environmental Factors: Consider if weather conditions (like extreme cold) could be affecting the mirror’s operation. By following these troubleshooting steps, you should be able to identify the cause of the B1670 code and take appropriate action to resolve the issue.